Faulty Shale Changes Plans On Pierre Dam

To avoid encountering faulty Oacoma shale, the power tunnels will be straightened, shortened and dug to a greater depth. The intake control works will now be at the intake portal and the power house will be moved several hundred feet downstream.

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To avoid encountering faulty Oacoma shale, the power tunnels will be straightened, shortened and dug to a greater depth. The intake control works will now be at the intake portal and the power house will be moved several hundred feet downstream.